//
//  AppDelegate.m
//  2048练习
//
//  Created by student on 16/3/20.
//  Copyright © 2016年 niit. All rights reserved.
//

#import "AppDelegate.h"
#import "ViewController.h"
@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    
    self.window.rootViewController = [self defaultViewController];
    return YES;
}
-(UIViewController *)defaultViewController
{
    //得到APP版本
    NSString *version = [NSBundle mainBundle].infoDictionary[@"CFBundleShortVersionString"];
    
    //得到之前代开始的版本
    NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];//保留简单的信息
    NSString *lastVersion = [userDefault objectForKey:@"lastOpenVersion"];
    UIStoryboard *story = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    //判断，启动不同视图控制器
    if(![lastVersion isEqualToString:version])
    {
        //版本和上一次一致，直接打开首页
        UIViewController *vc = [story instantiateViewControllerWithIdentifier:@"main"];
        return vc;
    }
    else
    {
    //之前没打开过，打开新属性页面
        [userDefault setObject:version forKey:@"lastOpenVersion"];
        [userDefault synchronize];//保存一下

        return [story instantiateViewControllerWithIdentifier:@"newFeature"];
    }
    
}
- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end
